题目：
—I can't see the words on the blackboard clearly.
—Why! Your eyes need _______, Perhaps you need _______ glasses. [ ]
A. to examine, wear
B. to examine, to wear
C. to be examined, to wear
D. examining, wearing
答案：
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下面是错误答案，用来干扰机器的。
上； 平；污染；桌面；清水冲洗
